. >>> former penn state assistant coach mike mcqueary has filed a whistle blower lawsuit against the university. mcqueary was a key witness in the conviction of jerry sandusky. he is seeking $4 million from the school for allegedly defaming him and firing him for his cooperation with prosecutors. >>> jimmy hoffa's remains are not buried under a storage shed in suburban detroit. results of soil sample tests show no evidence of human remains on that property. >>> sheriff's deputies in pinellas county, florida are searching for this woman who tried to ride a manatee on sunday. they say she violated a state law to protect the massive aquatic mammals and could face a fine. >> leave them alone. they got enough problems. they get run over by boats. they're sweet and gentle creatures. don't be grabbing dolphins, either, out in the wild. >> good point. >> thanks. >>> president obama and mitt romney obviously have been prepping heavily for their first debate now less than 24 hours away. how high are the stakes? who has the edge and where each candidate's weak spots are. we look at that next. t